Pioneer Elite VSX-43TX, Руководство по обслуживанию

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VSX-45TX
139
5 6 7 8
5 6
7
8
C
D
F
A
B
E
Pin Function
Pin Assignment (Top view)
PCM2902EG (COAXIAL IN ASSY: IC1681)
• USB Codec IC
No. Pin Name
I/O
Pin Function
1 D+ I/O USB differential input/output plus(1)
2 D– I/O USB differential input/output minus(1)
3 VBUS I Connect to USB power (VBUS)
4 DGNDU
−
Digital ground for USB transceiver
5 HID0 I HID key state input (mute), active high(3)
6 HID1 I HID key state input (volume up), active high(3)
7 HID2 I HID key state input (volume down), active high(3)
8 SEL0 I Must be set to high(6)
9 SEL1 I Must be set to high(6)
10 VCCCI
−
−
−
−
−
−
−
−
−
−
Internal analog power supply for codec(4)
11 AGNDC Analog ground for codec
12 VINL I ADC analog input for L-channel
13 VINR I ADC analog input for R-channel
14 VCOM Common for ADC/DAC (VCCCI/2) (4)
15 VOUTR O DAC Analog output for R-channel
16 VOUTL O DAC analog output for L-channel
17 VCCP1I Internal analog power supply for PLL(4)
18 AGNDP Analog ground for PLL
19 VCCP2I Internal analog power supply for PLL(4)
20 XTO O Crystal oscillator output
21 XTI I Crystal oscillator input(2)
22 AGNDX Analog ground for oscillator
23 VCCXI Internal analog power supply for oscillator(4)
24 DIN I S/PDIF input(5)
25 DOUT O S/PDIF output
26 DGND Digital ground
27 VDDI Internal digital power supply(4)
28 SSPND O Suspend flag, active low (Low: suspend, High: operational)
(1) LV-TTL level
(2) 3.3-V CMOS level input
(3) 3.3-V CMOS level input with internal pulldown. This pin informs the PC of serviceable control signals such as mute, volume up, or
volume down, which has no connection with the internal DAC or ADC directly. See the volume control and mute control section.
(4) Connect a decouple capacitor to GND
(5) 3.3-V CMOS level input with internal pulldown, 5 V tolerant
(6) TTL Schmitt trigger, 5 V tolerant
28 27 26 25 24 23 22 21 20 19 18 17 16 15
1 2 3 4 5 6 7 8 9
10 11 12 13 14
D+ D- VB
US
DGNDU HID0 HID1 HID2 SEL0 SEL1 VCCCI A
GNDC
VINL VINR VCOM
SSPND
VDDI
DGND
DOUT
DIN
VCCXI
A
GNDX
XTI
XT
O
VCCP2I
A
GNDP
VCCP1I
V
OUTL
V
OUTR